The Visual Proof of the Area of a Circle

In geometry, the area enclosed by a circle of radius r is πr2. Here the Greek letter π represents a constant, approximately equal to 3.14159, which is equal to the ratio of the circumference of any circle to its diameter.

Ingredients:

Step 1

Make a circle.

Step 2

Find the radius.

Step 3

Turn into a triangle.

Step 4:

Draw your triangle.

Step 5:

Find the height of your triangle and apply the formula!

DIY Details

Source

Avg. Duration

< 30min

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